does it matter what time you purchase the essential equipment for your SPS reef? is it better to purchase all of the best equipment (in your eyes) before you initialy setup your system or is it ok to buy it as you go without having tremendous effects on your tank. what certain items are better to get first intitially before setting up your tank and what are idealy not all that important and can be purchased down the road. i am asking because i am so so eager to set up my tank now!!! and i dont really have all my equipment like the skimmmer and etc but i dont want to do it if my system will suffer for it later.